Mold for making bottles



March l0, 1925- March 1o, 1925"A O 1,529,519

J. 4J. WANKO MOLD FOR MAKING BOTTLES Filed May 23, 1921 4 sheets-sheet 2 March l0," l@

J. J. WANKO MOLD FOR MAKING B'OTTLES,

FiledvMay 23, 192l 4 Sheets-Sheet 5 mmh 1o, T925- 1,529,519.

J. J. WANKO MOLD FOR MAKING BOTTLES Filed May 23, 1921 4 sheet's-sheet 4 Patented Mar. 10, 1925.

JOHN J. wANKo'-,l or wnsrrona; MARYLnNn MOLD FOR MAKING BO'ITLES.v

Appunti-on "filed- Mayr` 23,

Be it known 1that IJOHN J. AVVN'KO,'a' f citizen 'of the United States, residing at' Westportfin the city of Baltimore and Stateot Maryland, lhave invented certain new and useful Improvements 'in Molds n for Making Bottles, of which the following is a specilication. s

This invention relates toimprovements-` Y M I loperatef the air valves and illustrating the" in machines for moldingfglass "bottle-s, and

it comprises means fontormingeach bottlej oy two Vsuccessive operations, 1n a-pan of p d y Y l vthe molds,v the 'molds partsY being shown in" molds, in one of which the mouth andhnec'l'` of one bottle is termed whilethe body 'of' another bottle is being' iinisliedin the otliei-Y mold, they apparatus including'iineahfs,for releasingfthe tiinshed bottle from the latter.`

mold and 4for transferring thealnni'slied' bottle troni the former to the latter'lmold upon the opening' of the mold parts. In

carrying out the invention, I provide a4 ro` tatable mold carrier, which turns about a l'iorizontall axisy and `is provided' on. its opposite sides with mold parts for forming the mouths and necks of the bottles, and two sliding mold carriers on opposite sides of the rotatable carrier andmovable toward and from the same, these sliding carriers having` patterns Vfor forming mold cavitiesf above and below the rotatable carrier, to give. shape .to the bodies of the bottles.l When the mold cavities are 1closed,molten glass is poured into the upper cavity and air under pressure is admitted vto lthe upper part of said cavity to force the glassdown- -ward into the iiioritliiming patterns 'or/1" the rotatable carrier. Air is then adiV initted vthrough the rotatable carrier ,to the j l tothe post 2 and has a bearing-insaid car*-v interior of the bottle neck inthe upper4 cavity, to partly forni the body'of the bottle,

and simultaneously into a partly formed bottle, previously transferred to the lower cavity, to finish the body of the latter bottle. VThe sliding' mold carriers then'fmove apart to open the 'upper and lower mold cavities and allow the rotatable mold carrier to turn,` and during this openingmoveinfent ot the sliding carriers the finished bottle is released from the lower cavity, and `the uninished bottle in the upper cavity is swung` with the rotatable carrier into position to be enclosed in the lower cavity when the sliding carrie s are brought together. Vfhen the cavities are again closed, more glass is poured into the upper cavity andthe oper-y ations are repeated, the bottle mouth and Iconsists 'of two Yparts" i921) "ser'ii No. 471,54'1.

Hecker @ne boa-1s snag settimana@ t1-p per cavity', while thebody otf'another bottleY is being"iinislfied'in the lowercavity. In the accompanying"drawing,

F ig. l is atop plan view'o-f the apparatusi;`L`

Fig. 2 is'a rearelevation'ofthe saine;

F ig. 3 is an end elevation f'tlieapparatus,"

looking troni left to right "in F I Fig. 4t 1s a View showing th'ecafm's'fwhicli relation ofthe several'cams to one another;""v f Fig. 5 1s a central vertical section 'tl'irougli--- Fig. 9 is a detail view Showing1 thefpllug1 l in the rotatable carrier'in its raisedposltion,

paratus.,'showing/theI moldpartsf separated closing the lower end of the -upper mold] lteferring;tov the drawing',l and 2 indicate lposts or standards mounted on a 'suit-v ableA base and.'supporting l'shafts or trunnions 4 and 5, respectively, which trunnio'ns' ventend tlfirough openings (iin slidable mold carriers a and t, and into-a. rotatable mold vcarrieuo"which is arranged'betweenthe slid-I able carriers and 1s supported on tlie trun-v nions. `Thetrunnion4 is-tiXed to theV carrier -c and rotatable in a bearing in the post l,

and vthe trunnionf; whichy is hollow, isiixeel f rier. The rotatable carrier isv cubical in ltorni and hasfon two of its opposite" faces are alike, and, as best shownin Fig. '7,' each V 7, hinged together; and secured Vtothe block o by al l-iingefpin 8. The arrangement is suchthatthc block may be turnedto reverseI thepositi'ons ot the patterns by Vgiving the tru'nnion 4 a half turn. The mold carriers a and which are alike in construction, areI slidablyfmountedf on suitable guideways 9 on the base, and-are movable toward and'froni the carrier c, to close andopen the mold. "Each of the slidable carriers comprises van elongated block, standing uprighton the base, andhaving the opening 6 to receive one of the trunnions, and above and below the rotatable carrier the slidable carriers are provided with complementary mold parts, or patterns f, f, and g, g, for giving shape to the bodies of the bottles. The carriers a and b are pro` vided with pins or projections 10 below the mold parts f, f, for engaging and closing the mold parts d or e, whichever may be up` permost, when said carriers are brought to- Y gether to close the mold. For openingthe mold parts d or e, whichever may be lowermost, when the slidable carriersv are moved apart, I provide spring-pressed lingers or catches 11, 11, on said carriers, adapted to hook under pins 12, projecting from the tree ends of the mold parts 7 when the'inold is closed, and to pull o-utwardly on said pins and separate said ends when the sliding carriers are moved apart.

The carriers a and b are moved apart and together by pneumatic pressure, as hereinafter described, and in moving apart, after they have separated suiiciently to allow the carrier c to turn, the shaft or trunnion fl and the latter carrier are given a semirevolutio-n by means of a pawl 13, pivoted to the carrier a and adapted to engage a gro-ove Y a shaft 19 which is journaled in spiders 20' 14 or a groove 15 in said trunnion, 'said grooves having straight portions at their inner ends and having spiral portions at their outer ends, which latter portions causeV the trunnion to turn when the pawl moves outwardly in the groove. During the return or closing movement oi' the carriers i and b, the pawl rides out of the groove which it engaged on the outward movement and into the straight part of the other groove so that the carrier c is not turned during the closing movements of the carriers i and b. f

The rotatable mold carrier has a central bore 16,v extending at right angles to the trunnions, and in line with the openings in the hinged mold parts d and c. f in this opening is arranged a loosely fitting plug 17,

which has its ends tapered as shown at 17al and adapted to fit within theA openings in the mold parts and form a pattern for the interior of the bottle mouths. This plug rests upon a cam or eccentric 18, arranged within a slot 17b in the plug and secured to within the hollow trunnion 5, and extends into said slot. Normally, when the mold is closed, the upper end of the plug iits into the opening in the hinged mold which is uppermost, as shown in Fig. 9, so that when the glass is poured into the mold, these parts will give shape to the mouth of the bottle when air pressure is applied aboveithe lass. A spring 21, atached to an arm on the shaft which carries the eccentric 18,

with vanes 19a, and, at a certain point in the operation of blowing the bottles, air is admitted through the hollow trunnion to the molds, and in its passage strikes the vanes and causes the shaft and eccentric to turn and lower the plug 17 to the position shown in Fig. 5. rlhe air then flows past the plug in both directions into the partly formed bottles in the upper and lower molds. The upper mold parts f, f, have a conical opening f', adapted to receive a conical plug 7i, which closes this opening. The plug has a lange h', adapted to fit against the parts and it has perforations h2, through which air may pass into the cavity of the mold Jfrom the air pipe 22 to which the plug is att-ached. rlhe air pipe and plug are move able vertically to` remove and seat theV plug, as hereinafter explained.

The closure for the lower end of the lower mold comprises a disk or plate j, which is mounted upon an upright 23a, at the end of a lever 23, which lever is pivoted to the under side of the base, at the rear oi: thermold, in a suitable bearing 24. The free end of the lever is supported by two pairs oi' toggle levers consisting of links 25, pivoted to the lever 28 and extending in opposite directfions therefrom and connect- Aed to other levers 26 which are centrally pivoted to the base and project slightlyr above the base through slots 27. Springs 26a, connected to the lower arms of the latter levers and to the base, normally tend to break the toggles and hold the plate against the bottom of the mold vparts g,'g, to close the cavity in the lower mold. The levers 26 project into the path of movement of the sliding mold carriers a and and when the latter are moved apart to open the molds, these parts engage and rock the levers 26 to straighten the toggles and thereby lower the lever and the mold plate j, as illustrated in Fig. 6. When the carriers move to their closed positons, the levers 26 Vare released and the springs 26a cause the mold plate to move up and close the bottoni oll the lower mold.

Any suitable means may be employed for moving the slidable mold carriers apart and for raising and lowering the plug h. For moving the slidable carriers, I have shown two cylinders 28 and 29, horizontally arranged one above the other, at the rear of the carriers, and provided with pistons and piston rods, the piston rod 28a of the cylinder 28 being connected to the rearwardly extending bracket 30 on the carrier b, and the piston rod 29a, associated with the cylinder 29, extending in the opposite direction and being connected to the carrier a by a bracket 30a. The carriers a and b are normally held together by air under pressure admitted to opposite ends oithe cylinders from a supply pipe 35, through a pipe 31,

-f ieegsiefiw! leading lfro'rn an 'automatically controlletl ders. For movingfth'e carriers'apar the valve 32,l and" admitted toA the ""pipe33,` which leads to cross pipe 33?, connected* to both* cylinderspat 'the'fends opposite to those of'which-thepipe '31 is connected;

Air is admittedto the hollow trunnion'` 5, from the 'sup'plyj4 pipe 535, through )an automatically fcontiolledvalve 36, and va pipe" 3T connecting saidjvalverwithjthe trun'nion, l' and air is' .admittedv fronithe's'upply "pipe to the lpipe 22 and theL perforated plugl h' through 'an 'automatically 'control'ledfvalve 38, and a connect-i011:39`from'saidwalve` to the holl'o'w'stand'ard 22a'fupon which the pipe` 22 is hinged," l"

cycle of operations. y y ating the shaftglIhave 'shown alicylinder 45,

the endsbfiwhich-areconnected through a hand controlled' valve 46' to the 'pair supply pipe 35's'o that by turning the valve in one out-ward the full length ofaits stroke,l and by turning the'valve inthe opposite' direc` tion the piston will be withdrawn: nThis` piston rod fha/s 1 teethA 47a and constitutes a rack bar 'which engagesa gearflS'on the' cam shaft. `This gear-l is loosely -m`ounted on the shaft' and carres'af pawl-lSa, which engages" aratchetfwheel 49, securedto the shaft. Vith: this arrangement of tfparts, i when the rack bar kis forced rearwardly the cam shaft is turned, but whenthe'irac'k bar` is withdrawnthecam shaft remains sta"-V tionary. j The cama() raises and lowers the" hollow arm 22 by means of a lever 50, bearing upon said cam and .connected to" the arm by a link 51. The cam 4l actuates a lever 38nv to operate the' valve 38 and control the admission of air to said arm. The cam 42 operates a lever 36a, which controls the valve 36 for admit-ting air to the hollow trunnion, and the cam 43 operates a lever 32a which controls the valve 32 for admit ting air to the cylinders which move the sliding mold carriers.

In operation, the reciprocating mold carriers being held by pneumatic pressure in position to close the molds and the plug in the rotatable carrier being held in its upper position by the eccentric on which it rests, glass is poured into the upper mold cavity and the controlling valve 46 is moved to admit air to the cylinder 45 and the rack bar connected with the piston in the cylinder is moved rearwardly and gives one rotation to the cam shaft. During this rotation, the plug is first lowered to close the upper A'mold ycavity i and air-is then admitt'edtor=a moment"through thist lug tofforcethe' glass down into th'efmouth-forming mor'ld-patterns-l *on the rotatable carrier. Immediatelyftherea` trunnion to the interior ofthe rotatable car-v vanes on theshaft'l), causes'this shaftand5"^f the eccentric' thereoirto turn/and lower. t-liej plug' inthe rotatable'carrier so thatrtheair" may blow' Iintothe 'upper mold cavityailidf'f partly forma bottle thereimand at the same time-the lair 'may blowfinto the lowerm'old'z'f" cavityto vfinisha' partly formedfbottle pre'- y, i

viously.`transferred lto said cavity.v After p carrying the plugfk'lifts "cle'arfof the upper.

cavityfjjiThe' #sliding fmold 'carriers "i1-then move ,aparty openingfbo-th moldI fcaviti'e's' `vDuring this opening movement, the annular`ll mold patternonthe lowermostside of the the finishedV bottle in thelower cavity, 'and'.f,

the leve'r on which the ybottom.plate'for this* cavity fis supported'- rocks downward` allow- *i ing the-bottle vto be removedo'r toslideloli andthe rotatable carrier' is inverted, bring-f ing the partly formed bottle from the upp'e'r i cavity'into position to' be enclosed`^ inthe f lower cavity when the reciprocating carriers 'l are brought together.E The .reciprocating 'carriers then move togetherto close the niold'f cavities, and y :luiii1gtlns':closing movement,

the annular pattern on'the rotatablezcai'rier" which vwas' yopened Av'is again "closedfThe :lOO

parts are then in position'for anotherfope'ra'- '1 tion.

*Vi/That' I claim is 'Y and havingon one side1 mold partsfor form- Aing the mouthsofbottles, reciprocating inoid carrier', and means for automatically invertmg the rotatable carrier while the reciprocating carriers are moving apart, and for permitting the rotatable carrier to remain stationary while the reciprocating carriers are moving toward one another.

2. In a bottle molding machine, a carrier rotatable about a horizontal axis and having on opposite sides mold parts for forming the mouths of bottles, reciprocating mold carriers having mold parts adapted to form mold cavities above and below the rotatable carrier, and means for blowing air into the top of the upper cavity and then, through the rotatable carrier, into both cavities.

3. In a bottle molding machine, a carrier rotatable about a horizontal axis and having on opposite sides mold parts for forming the mouths of bottles, reciprocating mold carriers having mold parts adapted to form mold cavities above and below the rotatable l carriers having `moldpartsV adapted to form'A Y mold cavities above and below the rotatable carrier, means for blowing air into the top of the upper cavity and then, through the rotatable carrier, into both cavities, and means for inverting the rotatable carrier when the reciprocating carriers are moved apart.

4. In a bottle making machine, oppositely reciprocating carriers having mold parts adapted to form upper and lower mold cavities, a rotatable carrier between said reciprocating carriers and having on its opposite sides separable mold patterns, adapted to 'register with said cavities, for forming the mouths` of bottles, means for opening the lowermost of said patterns when the reciprocating carriers are moved apart, means for inverting the rotatable carrier, and means for closing said patterns when the reciprocating carriers are moved toward one another.

5. In a bottle making machine, oppositely reciprocating carriers having mold parts adapted to form upper and lower mold cavities, a. rotatable carrier between said reciprocating carriers and having on its opposite sides separable mold patterns, adapted to register with said cavities, for forming the ymouths of bottles, latches for connecting the lowermost of said patterns to the reciprocating carriers when the latter are moved toward one another, said latches adapted to open and then become disengaged from said lowerniost patterns when the reciprocating carriers are moved apart, means for inverting said rotatable carrier, and means for closing said` patterns after the last mentioned carrier has been inverted.

G. In a bottle-making machine, reciprocating carriers having patterns for forming upper and lower mold cavities, a rotatable carrier between said reciprocating carriers and having on opposite sides separable annular mold parts adapted to register with both of said cavities, a plug movable in the rotatable carrier and adapted to cooperate with the annular mold part which is uppermost to form arnold for the bottle mouths, means for blowing air into the top of the upper cavity, means for then vlowering said plug and foreblowing air through the rotatable parts, means for holding said plug normally in position to close the mold part which is uppermost, reciprocating carriers having parts for forming mold cavities above and below the rotatable carrier, means for blowing air into the top of thel upper cavity,

Vmeans for then lowering said plug and for blowing air past the plug into both cavities, means for moving the reciprocating carriers apart, and means ttor inverting the rotat/ able carrier.

8. In a bottle-making machine, a moldA carrier rotatable about a horizontal aXis and having annular mold parts at opposite sides of its axis, said carrier having an opening therethrough, a plug in said opening and having its ends shaped to tit into said mold parts, a hollow trunnion communicating with said opening, a shaft journaled in said trunnion and having vanes, an eccentric on said shaft normall7 holding said plug in an upper position, reciprocating carriers having parts for forming mold cavities above and below the rotatable carrier, means for blowing air into the top of the upper cavity, means for blowing air through said trunnion, past said vanes and plug into both cavities, means for moving the reciprocating carriers apart. and means for inverting the rotatable carrier. Y

In testimony whereof I aliix my signature.

JOHN J. WANKO.

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